German Chancellor Angela Merkel said Monday after meeting with leaders of Adam Opel GmbH that it was "not yet determined" whether the automaker would be given euro1 billion ($1.25 billion) in loan guarantees from the government.

General Motors announced a major overhaul of its unprofitable European operations Friday, bringing its units Adam Opel, Vauxhall Motors and Saab Automobile under a single management structure. Opel chief Carl-Peter Forster will take over as president of GM Europe, with the heads of Vauxhall and Saab reporting to him.